Portia Doubleday

Portia Doubleday

Bruce Birmelin / Dimension Films

Where to see her: "Youth in Revolt" What she's done: Aside from a lead role in the yet-to-be-released indie film "18," this is Doubleday's first major film. What she's playing: Doubleday follows "it" girls such as Ellen Page and Kat Dennings as the object of Michael Cera's affection in this film, based on the book series of the same name. She'll also get a bump from appearing alongside screen veterans such as Jean Smart and Steve Buscemi.

Where to see her: "Youth in Revolt" What she's done: Aside from a lead role in the yet-to-be-released indie film "18," this is Doubleday's first major film. What she's playing: Doubleday follows "it" girls such as Ellen Page and Kat Dennings as the object of Michael Cera's affection in this film, based on the book series of the same name. She'll also get a bump from appearing alongside screen veterans such as Jean Smart and Steve Buscemi. (Bruce Birmelin / Dimension Films)

Where to see her: "Youth in Revolt" What she's done: Aside from a lead role in the yet-to-be-released indie film "18," this is Doubleday's first major film. What she's playing: Doubleday follows "it" girls such as Ellen Page and Kat Dennings as the object of Michael Cera's affection in this film, based on the book series of the same name. She'll also get a bump from appearing alongside screen veterans such as Jean Smart and Steve Buscemi.